Shift solenoid A signal

PCM terminals 

1B (+)-Negative battery terminal (-) 

Oscilloscope setting 

• 5 V/DIV (Y), 5 ms/DIV (X), DC range

Vehicle condition 

• 4GR
  Fig 1: Inspection Graph Of Shift Solenoid A Signal Using Oscilloscope

  Courtesy of MAZDA MOTORS CORP.